/*
 *  Copyright (C) 2010 Pete Reisinger <p.reisinger@gmail.com>.
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package paypalnvp.request;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import paypalnvp.util.Validator;

/**
 * AddressVerify request. Confirms whether a postal address and postal code
 * match those of the specified PayPal account holder.
 * 
 * @author Pete Reisinger
 *         <p.reisinger@gmail.com>
 */
public final class AddressVerify implements Request {

	/** Method value of this request */
	private static final String METHOD_NAME = "AddressVerify";

	/** map that holds name value pair request values */
	private final Map<String, String> nvpRequest;

	/** map that holds name value pair response values */
	private Map<String, String> nvpResponse;

	/**
	 * 
	 * @param email
	 *            Email address of a PayPal member to verify. Must be valid
	 *            email with maximum 255 single-byte characters
	 * @param street
	 *            First line of the billing or shipping postal address to
	 *            verify. The value of Street must match the first three
	 *            single-byte characters of a postal address on file for the
	 *            PayPal member. Maximum string length: 35 single-byte
	 *            characters. Alphanumeric plus - , . ' # \
	 * @param zip
	 *            Postal code to verify. To pass verification, the value of Zip
	 *            must match the first five single-byte characters of the postal
	 *            code of the verified postal address for the verified PayPal
	 *            member. Maximum string length: 16 single-byte characters.
	 * @throws IllegalArgumentException
	 */
	public AddressVerify(String email, String street, String zip)
			throws IllegalArgumentException {

		/* validation */
		if (!Validator.isValidEmail(email)) {
			throw new IllegalArgumentException("Email is not valid");
		}

		if (email.length() > 255) {
			throw new IllegalArgumentException("Email can by max 255 "
					+ "characters long");
		}

		/* street */
		if (street == null) {
			throw new IllegalArgumentException("Street cannot be null");
		}
		if (street.length() > 35) {
			throw new IllegalArgumentException("Street cannot be longer than "
					+ "35 characters");
		}
		String streetRegex = "^[0-9a-zA-Z\\s\\-,\\.'#\\\\]{1,35}$";
		Matcher streetMatcher = Pattern.compile(streetRegex).matcher(street);
		if (!streetMatcher.matches()) {
			throw new IllegalArgumentException("Street is not valid");
		}

		/* zip */
		if (zip == null) {
			throw new IllegalArgumentException("Zip cannot be null");
		}
		if (zip.length() > 16) {
			throw new IllegalArgumentException("Zip cannot be longer than 16 "
					+ "characters");
		}

		/* instance variables */
		nvpResponse = new HashMap<String, String>();
		nvpRequest = new HashMap<String, String>();
		nvpRequest.put("METHOD", METHOD_NAME);

		nvpRequest.put("EMAIL", email);
		nvpRequest.put("STREET", street);
		nvpRequest.put("ZIP", zip);
	}

	public Map<String, String> getNVPRequest() {
		return new HashMap(nvpRequest);
	}

	public void setNVPResponse(Map<String, String> nvpResponse) {
		this.nvpResponse = new HashMap<String, String>(nvpResponse);
	}

	public Map<String, String> getNVPResponse() {
		return new HashMap<String, String>(nvpResponse);
	}

	@Override
	public String toString() {

		StringBuffer str = new StringBuffer("instance of AddressVerify");
		str.append("class with the vlues: nvpRequest - ");
		str.append(nvpRequest.toString());
		str.append("; nvpResponse - ");
		str.append(nvpResponse.toString());

		return str.toString();
	}
}
